[gnome-software] trivial: Fix a typo in a comment

[Kalev Lember <klember src gnome org>]

commit ca6f68219637a23d206a65ad26a63560633f793d
Author: Kalev Lember <kalevlember gmail com>
Date:   Mon May 25 20:52:00 2015 +0200

    trivial: Fix a typo in a comment

 src/gs-app-tile.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/gs-app-tile.c b/src/gs-app-tile.c
index 96d16bf..d0644df 100644
--- a/src/gs-app-tile.c
+++ b/src/gs-app-tile.c
@@ -83,7 +83,7 @@ app_state_changed_idle (gpointer user_data)
                                        gs_app_get_name (priv->app),
                                        _("Installing"));
                /* TRANSLATORS: this is the small blue label on the tile
-                * that tells the user the application is being installing */
+                * that tells the user the application is being installed */
                gtk_label_set_label (GTK_LABEL (label), _("Installing"));
                break;
        case AS_APP_STATE_REMOVING: